Jack



Dec. 6, 1949 w ou 2,490,199

JACK

Filed Aug. 13, 1946 r'"'""" F5 5 v 12"" TELL 12 17 50 43 45 INVENTOR.

JOHN W 500/? ATTORNEY Patented Dec. 6, 1949 omrso STATES PATENT OFFICE JACK":

John W. Bour; Ijo's Ailgeles, can; Application Au ust-1 3, 19'f6; Se iial rim-590,226

19 Claims.

This invention has to do with a jack and is more specifically concerned with a combined jack and operating means therefor, it being a general object'of the'inventionto provide a simple; effective, convenient jack and operator that 'ca'n be used to advantage in jacking up automobiles or the like.

Automobiles, in factmotor vehicles generally; equipped with pneumatic tires, require liftingior parts or' portions when a tire becomes deflated and it is common to employ simple mechanical orhydraulic jack for this purpose. It'is simple, in practice, to provide a jack mechanism, as such, that will effectively handle the load involved'and will operate through the desired distance; However, it is generally very difiicult and incon venient to operate the jacks that are provided for this purpose since they are, generally, located well under the vehicle in order to be most effective, and when so located they are most inaccessible.

The broader principles of my invention" are applicable, generally, to jacks of various-types; However, since hydraudic jacks are most ad vantag'eous in many situations and since this type of jack lends itself to the present invention-,1 will in this disclosure make reference to the invention carried out with'a hydraulic jack it being understood that such reference is not'to' be construed as a limitation upon the broader aspects of the invention.

A general object of my invention is to provide a sin'ncle jack mechanism for the general class of use referred to which mechanism is of simple, practical, inexpensive construction and Wh-i'chis effective and dependable in action.

A further object of my present invention is to provide a jack operator which can b'e"conveniently handled and manipulated to apply or locate, to manipulate or operate, and to with draw a jack from beneath an object such as a mctor vehicle or the like.

It is another object of my invention to provide a mechanism combining a jack and an operator therefor whereby the jack portion proper can be conveniently handled through the operator or operat ng mechanism for insertion to and removal from position under a've'hicle or the like, and wh ch operator is such that it can be manipulated easi y and in a most'ad vantageous manner to work the .ia h both to el'e vateit and to release it in a simp e; convenient manner and w thout d n r of displacing the jack from the de ired position.

The various objects and features off my inven- Cl. 25 1-1) I tion will b'e fully understood from the following detailed description of atypical preferred form andapplication of my invention, throughout which-description reference is made to the accompanying drawings; in =WhlChI Fig. 1- is" a side elevation of the jack and operator that I have 'provided. Fig. 2 is a plan viewof'the-pa'rts shown in Fig. 1. Fig. 3' is an enlarged-detailed sectional view taken substantially as indicated byline 3 3 on Fig. 2. Fig. 4

is an-'enlargeddetailed sectional view taken substantially' as indicated by line 4:4 on Fig. 2.

Figs 5 -is' a'transvrse sectional view taken as indioated' by line 5--5'- on Fig. 3. Fig. 6 is asectiona'l view'taken as-indicated by line 6--6 on Figi-3and 'Fig1 7" is a view of one of the parts removed=from the rest of the structure.

The' jack'proper' A, which I have shown in the drawings; is of the-hydraulic type and is adapted to"beq handled, that is, both manipulated and operatedi by the operatonB'that I have provided. The' jack A is preferably either a single or -two-stage' hydraulic jack involving, generally, a baselfl hayingi an upstanding boss carrying acylindr lt'e A piston l3 operates in the cylinder anda piston or' lift rod I4 connects'to the ii'stoiil3an'd exten'ds upwardly: through a head I 5 'upper end ofthe cylinder. A work' enplate lfi' is provided *on the up er endof Y on: I labove the head IS; the plate being uesi ned and proportioned to' effectively fit'or 'engage trreparticum object to be l fted;-

Ph'e pump involves a reservoir R carrying a i? (if-fluid. which reservoir may be formed by til! surroundingthe cylind r l2 and exbe ween the boss l I and the head 15," as show t ghout the"drawings. The jack furvolv s chinol8 for ha dling o erating flu'i' hat it receives such fluid from the resei ibi R and delivers it under nressureint'o the d-hlithe cylinder' m: below the iston l3. particular" pump is illustrated in the drawiifgs' is a 1 cylinder" and piston type of Y pump carrled by he'base of'the iack to extend in a substa htially horizontal dire tion'althou h I'n'refe'r tE-dbhfit it so that' it extends from one" side of the boss H and's' i ht y'u ward' to" be slightly i nlii i'di as s'h'owh'in Fi'gf 3'0 the drawin s: The particular numn illustrated involvesn rally, a cylindei' 'lflattached' to the boss H of the-base ata s'ock t ZI nrOvi'd'ed in th boss, and I have shown thecyli der screw thread d into the socket 21; ApistQn' ZZ' is slidably-ca riedin the cy i der 20 'ahda piston rod 23*connects to the pi ton '22 ai-id-projectsirom the-cylinder zll through a-cap 24 at the outer end of the cylinder. I provide a head 25 at the outer end of the rod 23 which head has an opening 26 for the reception of a part of the operator, as will be hereinafter described. In practice I may employ any suitable means to maintain the head 25 in a fixed rotation position. It is desirable that the head 25 be maintained in a fixed rotative position and for this purpose I prefer to provide a rod 23 with a fiat side 21 and form the opening 28 in the cap 24 so that it fits the contour or cross sectional configuration of the rod and thus keys or holds the rod against rotation. A spring 29 is preferably provided in the cylinder 20 between the cap 24 and the piston 22 to normally yieldingly urge the piston 22 toward the inner end of the cylinder.

The pump or pump means l8 involves suitable valve means for controlling the fiow of fluid. In the preferred construction two recesses or chambers 30 and 3| are provided in the bottom of the socket 2| and spring pressed ball valves 32 and 33 are carried by and operate in the chambers 38 and 3|, respectively. The valve 32 is an inlet valve while the valve 33 is an outlet Valve. An inlet port-35 connects the reservoir R with the chamber 30 and the valve 32 seats in the bottom of the chamber under the influence of a suitable spring. A delivery port 36 connects the chamber 3| with the cylinder l2 below the piston l3 and the valve 33 cooperates with a seat plate 38 confined in the bottom of the socket 2| by the end of the cylinder 26 that screw threads into the socket. The seat plate 38 has a seat 39 with which the valve 33 cooperates and it has a port 48 that registers with the chamber 30. A pin 42 serves to orient the plate 38 and to hold it against rotation from the desired operating position.

The jack further provides a release means or release valve device 43 by or through which fluid under pressure beneath the piston |3 can be released to flow into the reservoir R. The means 43 as illustrated in the drawings involves a bypass port 44 formed in the boss between the lower end of the cylinder l2 and the lower end of reservoir R, which port is formed by suitable bored openings in the manner shown in Fig. 4. A slide valve is provided in connection with the by-pass port to control flow therethrough, the valve being adapted to be opened by positive operating means to allow free flow between the reservoir and cylinder. The particular valve construction illustrated involves a fitting 45 carried by or threaded into the boss I to have a seat portion 46 at a chamber 4! in the port 44 which chamber carries a valve 48 normally held against the seat by a spring. The parts are arranged and related so that pressure of fluid in the cylinder I2 is closed off from the reservoir. An operating stem 50 is carried by the fitting 45 and is engaged by the spring carried in the chamber 41 so that the stem is normally yieldingly held in an up position where the valve 48 is allowed to close the port 44. The stem 58 projects above the fitting or to a position where it is exposed and can be engaged for operation. In the arrangement illustrated the stem 58 projects so that it is exposed and can be depressed and when depressed it engages the valve 48 and moves it down against the spring 49 opening the by-pass 44. l

The operation of the jack as hereinabove described will be apparent, that is, it will be readily understood how reciprocation of the pump rod 23 will cause the pump to draw fluid from the reservoir R and deliver it under pressure to the lower end of the cylinder |2 so that it acts to force the piston |3 up in the cylinder l2 and thus elevate the plate IS on the upper end of the rod |4. When it is desired to release the jack so that the piston 3 returns to the lower end of the cylinder 2 the stem 58 is depressed opening valve 48 so that the by-pass 44 is opened thus providing free communication between the cylinder and the reservoir.

The operator that I have provided is preferably a light, simple device or tool provided with means for engaging the jack A so that the jack can be slid or manipulated to the desired position and can be held in that position, provided with means for operating the mechanism H! of the jack and provided with means for operating the release means 43 of the jack. The operator in the form illustrated involves, generally, an elongate body carrying means 56 for connection with the jack A, operating means 51 for the pump of the jack and operating means 58 for the release means of the jack.

The body 55 of the operator is preferably a light, rigid elongate member or shaft provided at what I will term its inner end with a handle or hand grip 60 and serving as a mounting for the means 56, 51 and 58. In the preferred construction the body 55 may be formed of sheet metal and may be made U-shaped in cross sectional configuration so that it is light, strong and rigid.

The means 56 provided at the outer or forward end of the body 55 serves to connect the body with the jack A. In the particular construction illustrated I show a jack wherein the boss II has an upwardly facing socket 6| adjacent the pump l8.

I When the jack is thus formed the means 55 may or the Wall which faces the operator, and I provide a hook portion 5| on the means 56 which engages in the opening. It will be apparent that the body is connected with the jack to enable the person using the equipment to not only push or pull the jack along a horizontal support such as the ground, but also to lift it, and to turn it to any desired angle by swinging the body 55 from side to side. In the case illustrated I have shown the outer end portion of the body 55 and the finger 62 of means 56 reinforced by a core 63 within the sheet metal that forms the body and the finger.

The means 57 carried by the body 55 for operating the pump 28 of the jack preferably includes a pump rod 64 that extends longitudinally of the body 55 and which is provided at the outer end portion of the body with a laterally projecting part or tongue 55 for engagement in the opening 26 in the head 25 of piston rod 23. The means 51 further provides means for operating or reciprocating the rod 64 and this means preferably includes a simple lever 65 pivotally connected to the body 55 at 67. The inner end of the pump rod 64 is pivotally connected to the lever 66 at 68 and at'a point suitably removed from the point 51. The lever 56 has a projecting end outward of or beyond the pivotal connection 68 which part forms a handle that can be conveniently gripped so that the lever can be oscillated in order to reciprocate the rod 64.

The means 55 provided ftr operating there down-a'sindicated by the arrow iii'g the stern iiii 'to be depressed with onseque'r'rt opening of the valve 48 as 'above desoribedfl In the general-- arrangement of parts provided in the operator'- that-'1 have described eump rod Bland the shaf-tTl! eatendsubstanna y allel with the body 55 amrwnennieparn are kit in use the lever 66 is folded down to be- 'substan tiallyparallel with thebody, with s'ult' that the assembly forms aneat; compact unit-Z It'is pre frred in practice to guide-the pump -rod*' to the outer end portion of the body, as by a suitable guidebra'cket 80'; and also to gd'ide -theshaft lfi at-theouter endp'ortion of the body 55; new guide bracket 81 z m using" the" equipment that I have provided the finger 52 on-the outer end-of the'body-fie i's' engagedin the socket 5'! si-multaneously with-engagement' of the tongue '55 inthe opening 2E-'=of mama; This-establishes connection Qr'ehga'g'ement' between the operator and-thejack andloc'ates thefoot- H of-means 58 in position" over the stern 50 -of means 43. With thepa-rts thus-en gaged a" person handling the operatorfrom the handle portion 60 can slidethe jack under-a1 car or like "object to locate itin 'the-dsired position, and -if=riecessary can-turn the" jacl f't'o the desired rotative" position'; When the jack is" located the handle-65 is oscillated causing the um r diet to be -reciprocated. Eteciproc'ati'on of-the r d fi i reciprocate'sthe rod- 23" of pump S c'ausirig' ii idto'bepumped from the reservoir into'the cylinder of the 'j'ack. This operatio'n can be continued and as it is being performed the operator can -hold "the handle Gil-with one hand whilef he operates-the lever 65 'with the other hand-i When-itisdsird torelease the-jaclr it isme'rel-y necessary forthe' usertoturn thek-nob 1-2 in amannento move the f-c'iotfil'l into engagement withthefstemifl and depress the 'stem openin-g-' 'the-'valve lfii n suitable manipulation of the knob =12 the'ja'ckcan be released or lowered at the'desired" speed.

Whenthe jack has'been lowered it can be with-- drawn from beneath the vehicle or from the-local tion of use, and when not in use the operator-B can be disengaged from the jack A by simply lifting the finger 62 and tongue 55 from the socket 6i and "opening 26, respectively. I

From the foregoing description it will be apparent that I-have, by my present invention, provided an extremely simple, inexpensive compact and yet effective apparatus. The jack Ais simple and compact inform and the operator B is simple, inexpensive and light. Theentire mechanism is easyto handle and operate and when not in use can be stored in a very limited space.

Having described only atypical preferred form and application .of my invention, I do 'n'otiwish' to be limited or restricted to the speciflcdetails hereinset' forth, but wish .to reserve to myself any variations-0r:modifications that mayn'appear ab'le by one of the operating element's ofth'e ope-r:

6 to those skilled in the a soop'e of the-followingcla Having described my invention; I- olair'na- 1. A -unita'ry jack opei'able byan -opeeater may: ing an elongate body with a coupling element at one. ehdahd carrying two operat g elements-i-neluding-g a base having ano en socket releasably receiving the coupling element of theoperatoifi an actuatingpump with a working part en 'gage= ator whemthe coupling element is engagspcketiand-a release means-controlling thepu'in-p engageable by theother operatingfelem'ent of the actuator;

2; A unitary jack operable byarroperatorl'raving 'an' elongatei body with" a coupling element at one end and carrying-two operating eleno'entsiiri-= eluding, a base having an open socket releasably receiving: the coupling element of the operator: to releasably connect the jack and actua-torg an ac= tuating purnp with inlet-and outlet valves'and a Working part engageable" by one of the operating elements of the operator when the actuator and jack-arerconnected and a release valve operable to'rel'ease pressure established by the pump-and engageable bythe other operating el'ernent of the actuator when the actuator-'and-ja'cl are'c'on= nected.

3. An-actuator for a jack having an opera'ti'ng part to be reciprocated, and a' release-means with an ioperator-to be depressed for releasingthe jack including, an elongate body, a rod carriedbyvthe body and having means for connection-with the operating part,- means for reciprocating therod, a shaft rotatably carried by the body and-carrying an'element engageable with the operator: when the'rod is connected 'With the operating-part:

4; An actuator for a jack havingan' operating part-to be reciprocated, and a release means with aniloperator'to be depressed fo'r're'leasing. the jack including, an elongate body with a projecting. fingerconnectable with the jack, a rod carried by the body and having means for connection with the operating part, means for reciprocating the rod, ashaft rotatably. carried by the body ahii'cai' ryingc. an element engageable with the operator when the rod' is" connected With'the operating part;

5; An actuator for a jack having an operating part .to be reciprocated, and a release means with an operator to be depressed for releasing the jack including, an elongate body with a projecting finger connectable with the'ja'ck, a rod 'carried 'by the body and having a projecting tongue for connection'with the operating part, means for-re: cipro-cating, the rod, a shaft rotatablyv carried by the body and carrying an element engageable with the operator when the rod "is connected with the operating .part.

6.= An actuator for a jack having an operating part to berecip-rocated', and a release m'eans wit-h an operator-to be depressed for releasing the jack including, an elongate body, a rod carried by the body and having means for connection with the operating part, means for reciprocating the rod, a shaft rotatably carried by the body and carry= ingja laterallyprojecting foot engageable':with the operator when the rod is connected'with the operating part.

'T. An a'ctuatorlfor a jack having a so'cket; an operating.. pump with a reciprocatingpistonred; and al release valve with 1 an exposed operating stem including; anelongate bod-y having a handl at its inner end,- a'flnger a't the' enter en e body engageable' in the. soeket to" conhect ithe body and jack, an operating rod carried by the body and having a projecting tongue to connect with the piston rod, and a shaft carried by the body having a projecting foot for operating the stem.

8. An actuator for a jack having a socket, an operating pump with a reciprocating piston rod, and a release valve with an exposed operating stem including, an elongate body having a handle at its inner end, a finger at the outer end of the body engageable in the socket to connect the body and jack, an operating rod carried by the body and having a projecting tongue to connect with the piston rod, and a shaft carried by the body having a projecting foot for operating the stem, the body, operating rod and shaft being substantially parallel with each other.

9. An actuator for a jack having a socket, an operating pump with a reciprocating piston rod, and a release valve with an exposed operating stem including, an elongate body having a handle at its inner end, a laterally projecting finger at the outer end of the body engageable in the socket to connect the body and jack, an operating rod carried by the body and having a laterally projecting tongue to connect with the piston rod, and a shaft carried by the body having a laterally projecting foot for operating the stem.

10. An actuator for a jack having a socket, an operating pump with a reciprocating piston rod, and a release valve with an exposed operating stem including, an elongate body having a handle at its inner end, a finger at the outer end of the body engageable in the socket to connect the body and jack, an operating rod carried by the body and having a projecting tongue to connect with the piston rod, operating means for the operating rod carried by the body and operable to reciprocate said operating rod, and a shaft carried by the body having a projecting foot for operating the stem.

11. An actuator for a jack having a socket, an operating pump with a reciprocating piston rod, and a release valve with an exposed operating stem including, an elongate body having a handle at its inner end, a finger at the outer end of the body engageable in the socket to connect the body and jack, an operating rod carried by the body and having a projecting tongue to connect with the piston rod, an operating lever pivotally connected with the body and with the operating rod, and a shaft carried by the body having a projecting foot for operating the stem.

12. In combination a jack having a socket, an operating pump with a reciprocating piston rod, and a release valve with an exposed operating stem, and an operator including an elongate body having a handle at its inner end, a finger at the outer end of the body engageable in the socket to connect the body and jack, an operating rod carried by the body and having a projecting tongue to connect with the piston rod, and a shaft carried by the body having a projecting foot for operating the stem.

13. In combination, a jack having a socket, an operating pump with a reciprocating piston rod, and a release valve with an exposed operating stem, and an operator including an elongate body having a handle at its inner end, a finger at the outer end of the body engageable in the socket to connect the body and jack, an operating rod carried by the body and having a projecting tongue to connect with the piston rod, and a shaft carried by the body having a projecting foot for operating the stem, the body, operating rod and shaft being substantially parallel with each other.

14. In combination, a jack having a socket, an operating pump with a reciprocating piston rod, and a release valve with an exposed operating stem, and an operator including an elongate body having a handle at its inner end, a laterally projecting finger at the outer end of the body engageable in the socket to connect the body and jack, an operating rod carried by the body and having a laterally projecting tongue to connect with the piston rod, and a shaft carried by the body having a laterally projecting foot for operating the stem.

15. In combination, a jack having a socket, an operating pump with a reciprocating piston rod, and a release valve with an exposed operating stem, and an operator including an elongate body having a handle at its inner end, a finger at the outer end of the body engageable in the socket to connect the body and jack, an operating rod carried by the body and having a projecting tongue to connect with the piston rod, an operating lever pivotally'connected with the body and with the operating rod and a shaft carried by the body having a projecting foot for operating the stem.

16. In combination, a jack having a socket, an operating pump with a reciprocating piston rod, and a release valve with an exposed operating stem, and an operator including an elongate body having a handle at its inner end, a finger at the outer end of the body engageable in the socket to connect the body and jack, an operating rod carried by the body and having a projecting tongue to connect with the piston rod, operating means for the operating rod carried by the body and operable to reciprocate said operating rod and a shaft carried by the body having a projecting foot for operating the stem.

17. An actuator for a jack having two operating parts one a pressure generating part and the other a pressure release including, an elongate body, means at one end of the body releasably engageable with the jack to couple the actuator and jack, an elongate member carried by the body and movable relative to the body, means at the other end of the body engaging one end of said member and operable to work said member relative to the body, means at the other end of said member engageable with the pressure generating part to operate it, a second elongate member carried by the body and movable relative thereto, and means carried by said second member positioned to operatively engage the pressure release when the actuator is coupled to the jack.

18. A mechanism of the character described including, a base, a jack cylinder projecting vertically from the base, a jack piston operable in the cylinder, a liquid reservoir carried by the base, a pump carried by the base with a reciprocating element projecting laterally of the jack cylinder and having fluid connection with the cylinder and reservoir to pump liquid from the reservoir to the cylinder, pressure release means including a duct in connection with the cylinder and the reservoir and a valve controlling the duct and having an exposed operating stem, the base having an open socket angularly related to the pump, an elongate body having a lateral projection at one end engageable in the socket to releasably couple the body and base, an elongate operating member carried by the body and having a part releasably engageable with the reciprocating element of the pump, and a second elongate operating member carried by the body with a part operatively engageable with the stem of the valve when the body is coupled to the base and the first mentioned member is engaged with the reciprocating part of the pump.

19. A mechanism of the character described including, a base, a jack cylinder projecting vertically from the base, a jack piston operable in the cylinder, a liquid reservoir carried by the base and surrounding the cylinder, a pump carried by the base with a reciprocating element projecting laterally of the jack cylinder and reservoir and having fluid connection with the cylinder and reservoir to pump liquid from the reservoir to the cylinder, pressure release means including a duct in connection with the cylinder and the reservoir and a valve laterally oifset from the pump and controlling the duct and having an exposed upwardly projecting operating stem, the base having an upwardly opening socket angularly related to the pump, an elongate body having a lateral projection at one end engageable in REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date Bolens Oct. 4, 1 932 Number 

